Guthrie, J. W., & Wynne, E. (1971). New models for American education. Prentice-Hall.
Cita Chicago (17th ed.)Guthrie, James W., i Edward Wynne. New Models for American Education. Englewood Cliffs, N. J: Prentice-Hall, 1971.
Cita MLA (9th ed.)Guthrie, James W., i Edward Wynne. New Models for American Education. Prentice-Hall, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.